Necktie clasp



FIG. 1 is an enlarged perspective view of a necktie clasp showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a front elevational view;

FIG. 5 is a rear elevational view; and

FIG. 6 is a left side elevational view. 

The ornamental design for a necktie clasp, as shown. 